Elastic pad

Abstract

The utility model provides a kind of elastic pad, comprising: elastic module, soft pad layer and outer cover;The soft pad layer is arranged on the upper surface of elastic module, and is connected with elastic module by first connecting component;The outer cover covers the side surface and the bottom surface outside of elastic module, and is connected along the circumference of soft pad layer with soft pad layer by second connecting component.The elastic pad described above can avoid the slippage of soft pad layer during use.

Description

Technical Field

[0001] This utility model relates to household products, and more particularly to household products with elastic pads. Background Technology

[0002] In sofa beds or mattresses, a padded layer is usually placed inside the outer cover. Currently, the existing method is to use tie points to fix the padded layer and the outer cover directly to secure them. However, the elastic core of a mattress is an elastic unit, and during daily use, the internally sewn padded layer is prone to slippage, causing wrinkles on the surface of the outer cover or padded layers to accumulate, resulting in bulges or depressions in the elastic mattress. Utility Model Content

[0003] The main technical problem to be solved by this utility model is to provide an elastic pad that can prevent the soft pad layer from slipping during use.

[0004] To solve the above-mentioned technical problems, the present invention provides an elastic pad, comprising: an elastic module, a soft pad layer, and an outer cover; the soft pad layer is disposed on the upper surface of the elastic module and is connected to the elastic module through a first connecting component; the outer cover covers the outer side and bottom surface of the elastic module and is connected to the soft pad layer along the circumference of the soft pad layer through a second connecting component.

[0005] In a preferred embodiment: the elastic module includes a base and elastic units arranged in an array on the base; the cushion layer is connected to the base or the elastic units via a first connecting component.

[0006] In a preferred embodiment: the first connecting component includes a padding connector disposed along the circumference of the padding layer, and a padding connector mating component disposed on the side of the outermost ring of elastic units: the padding connector and the padding connector mating component are plugged into each other.

[0007] In a preferred embodiment: the first connecting component includes a padding connector disposed along the axial direction of the padding layer and a padding connecting fitting disposed along the outer periphery of the base; the padding connector and the padding connecting fitting are hook-and-loop connected.

[0008] In a preferred embodiment: the second connecting component is a zipper.

[0009] The present invention also provides an elastic pad, comprising: an elastic module, a soft pad layer, and an outer cover; the soft pad layer is disposed on the upper surface of the elastic module and connected to the elastic module through a first connecting component; the outer cover covers the top and side surfaces of the soft pad layer and the side surfaces of the elastic module, and is fixedly connected to the elastic module through a second connecting component.

[0010] In a preferred embodiment: the elastic module includes a base and elastic units arranged in an array on the base; the cushion layer is connected to the elastic units through a first connecting component, and the outer cover is connected to the base through a second connecting component.

[0011] In a preferred embodiment: the first connecting component includes a padding connector disposed along the circumference of the padding layer, and a padding connector mating component disposed on the side of the outermost ring of elastic units; the padding connector and the padding connector mating component are plug-in connections.

[0012] In a preferred embodiment: the outer cover includes a first portion covering the upper surface of the cushion layer and a second portion covering the side of the cushion layer and the side of the elastic module; the second connecting assembly includes an outer cover connector disposed circumferentially on the side of the second portion away from the first portion, and an outer cover connecting fitting disposed circumferentially along the base;

[0013] The outer cover connector and the outer cover connecting fitting are either plug-in or hook-in.

[0014] In a preferred embodiment: the first portion and the second portion surround and define a receiving cavity, the cushioning layer is disposed in the receiving cavity and is stitched and fixed to the side of the first portion facing the receiving cavity.

[0015] In a preferred embodiment: the elastic pad is the elastic pad of a folding sofa bed, and the elastic module is divided into a backrest elastic module and a seat cushion elastic module.

[0016] In a preferred embodiment: the outer cover includes a first portion covering the upper surface of the cushion layer and a second portion covering the sides of the cushion layer and the sides of the elastic module;

[0017] The second part has an opening at the position between the corresponding backrest elastic module and the seat cushion elastic module; when the included angle between the backrest elastic module and the seat cushion elastic module decreases, the opening angle increases.

[0018] The outer cover also includes a third part connected between the openings on both sides of the second part.

[0019] In a preferred embodiment: the second connecting assembly includes an outer cover connector disposed circumferentially along the side of the second and third portions away from the first portion, and an outer cover connecting fitting disposed circumferentially along the base;

[0020] The outer cover connector and the outer cover connecting fitting are either plug-in or hook-in.

[0021] Compared with the prior art, the technical solution of this utility model has the following beneficial effects:

[0022] The elastic pad provided by this utility model can effectively prevent relative slippage between the elastic module, the soft pad, and the outer cover by fixing the soft pad layer and the elastic module, and then fixing the soft pad layer and the outer cover. This avoids wrinkles on the surface of the outer cover or bulging or depression of the elastic pad product after the soft pad layer accumulates during use. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the elastic pad in the preferred embodiment 1 of this utility model;

[0024] Figure 2 This is an exploded view of the elastic pad in the preferred embodiment 1 of this utility model;

[0025] Figure 3 This is a cross-sectional view of the elastic pad in the preferred embodiment 1 of this utility model;

[0026] Figure 4 This is a schematic diagram of the cushion layer in the preferred embodiment 1 of this utility model;

[0027] Figure 5 for Figure 4 A magnified view of a portion of the image;

[0028] Figure 6 This is a schematic diagram of the cushion layer from another angle in the preferred embodiment 1 of this utility model;

[0029] Figure 7 for Figure 6 A magnified view of a portion of the image;

[0030] Figure 8 This is a schematic diagram showing the connection between the cushion layer and the elastic module in the preferred embodiment 1 of this utility model;

[0031] Figure 9 for Figure 8 A magnified view of a portion of the image;

[0032] Figure 10 This is a schematic diagram of the cushion layer in the preferred embodiment 2 of this utility model;

[0033] Figure 11 for Figure 10 A magnified view of a portion of the image;

[0034] Figure 12 This is a schematic diagram of the cushion layer from another angle in the preferred embodiment 2 of this utility model;

[0035] Figure 13 for Figure 12 A magnified view of a portion of the image;

[0036] Figure 14 This is a connection diagram of the first connecting component in the preferred embodiment 2 of this utility model;

[0037] Figure 15 This is a schematic diagram of the first connecting component from another angle in the preferred embodiment 2 of this utility model;

[0038] Figure 16 This is a schematic diagram of the cushion layer in the preferred embodiment 3 of this utility model;

[0039] Figure 17 This is a schematic diagram of the cushion layer from another angle in the preferred embodiment 3 of this utility model;

[0040] Figure 18 for Figure 17 A magnified view of a portion of the image;

[0041] Figure 19 This is a schematic diagram of the connection of the first connecting component in the preferred embodiment 3 of this utility model;

[0042] Figure 20 This is a connection diagram of the first connecting component in the preferred embodiment 4 of this utility model;

[0043] Figure 21 This is a schematic diagram of the outer cover and the padding layer in the preferred embodiment 5 of this utility model;

[0044] Figure 22 This is a schematic diagram of the outer cover in preferred embodiment 5 of this utility model;

[0045] Figure 23 This is a cross-sectional view of the outer cover and the padding layer in the preferred embodiment 5 of this utility model;

[0046] Figure 24 This is an exploded view of the elastic pad in the preferred embodiment 5 of this utility model;

[0047] Figure 25 for Figure 24 A magnified view of a portion of the image;

[0048] Figure 26 This is a cross-sectional view of the elastic pad in the preferred embodiment 5 of this utility model;

[0049] Figure 27 This is a connection diagram of the second connecting component in the preferred embodiment 6 of this utility model;

[0050] Figure 28 This is a connection diagram of the second connecting component in the preferred embodiment 7 of this utility model;

[0051] Figure 29 This is a connection diagram of the second connecting component in the preferred embodiment 8 of this utility model;

[0052] Figure 30 and Figure 31This is a connection diagram of the second connecting component in the preferred embodiment 9 of this utility model;

[0053] Figure 32 This is a connection diagram of the second connecting component in the preferred embodiment 10 of this utility model;

[0054] Figure 33 This is a connection diagram of the second connecting component in the preferred embodiment 11 of this utility model;

[0055] Figure 34 This is a connection diagram of the second connecting component in the preferred embodiment 12 of this utility model;

[0056] Figure 35 This is a schematic diagram of the folding sofa bed in the preferred embodiment 13 of this utility model;

[0057] Figure 36 This is a schematic diagram of the elastic pad in the preferred embodiment 13 of this utility model;

[0058] Figure 37 This is a schematic diagram of the outer cover in the preferred embodiment 13 of this utility model;

[0059] Figure 38 This is a cross-sectional view of the outer cover in the preferred embodiment 13 of this utility model. Detailed Implementation

[0060] To make the technical solution and features of this utility model clearer, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific examples. It should be understood that these examples are only for illustrating this utility model and are not intended to limit the scope of this utility model. After reading this utility model, any modifications of this utility model by those skilled in the art in various equivalent forms fall within the scope defined by the appended claims.

[0061] Example 1

[0062] refer to Figure 1-9 This utility model provides an elastic pad, including: an elastic module 1, a soft pad layer 2, and an outer cover 3; the soft pad layer 2 is disposed on the upper surface of the elastic module 1 and is connected to the elastic module 1 through a first connecting component 4; the outer cover 3 covers the outer side and bottom surface of the elastic module 1 and is connected to the soft pad layer 2 along the circumference of the soft pad layer 2 through a second connecting component 5. In this embodiment, the second connecting component is a zipper 4.

[0063] The aforementioned elastic pad, by fixing the soft pad layer 2 and the elastic module 1, and then fixing the soft pad layer 2 and the outer cover 3, can effectively prevent relative slippage between the elastic module 1, the soft pad layer 2 and the outer cover 3, thereby preventing wrinkles from appearing on the surface of the outer cover 3 or bulging or sinking of the elastic pad product after the soft pad layer 2 accumulates during the use of the elastic pad.

[0064] Specifically, the elastic module 1 includes a base 11 and elastic units 12 arranged in an array on the base 11; the elastic units 12 can be directly connected to the base 11, or the elastic units 12 can be connected to each other and then connected to the base 11. The cushion layer 2 is connected to the elastic units 12 through a first connecting component 4.

[0065] In this embodiment, the first connecting component 4 includes a padding connector 41 arranged circumferentially along the padding layer 2, and a padding connecting mating component 42 arranged on the side of the outermost elastic unit 12. The padding connector 41 and the padding connecting mating component 42 are plugged into each other. The padding connector 41 is fixed to the padding layer 2 by a pull strap 40. As a simple alternative, the padding connector 41 can also be directly fixed to the padding layer 2. The padding connector 41 includes a first insertion port 411 and a first insertion block 412, which are arranged in a V-shape. The corresponding padding connecting mating component 42 is arranged on the upper cover of the elastic unit 12, and it also includes a second insertion port and a second insertion block. The second insertion port is used to insert into the first insertion block 412, and the first insertion port 411 is used to insert into the second insertion block. After the insertion is completed, the ends of the first insertion port 411 and the second insertion port abut against each other.

[0066] Example 2

[0067] refer to Figures 10-15 This embodiment is the same as embodiment 1. The padding connector 41 and the padding connector mating part 42 are also connected by plugging. The difference is that the plugging structure of the padding connector 41 and the padding connector mating part 42 is different.

[0068] The padding connector 42 has a through-hole 421 extending along the height direction of the elastic unit 12. The padding connector includes a body 413 and a plug 414 for inserting into the through-hole 421. The body 413 and the plug 414 are connected by ribs, allowing the plug 414 to deform relative to the body 413 when subjected to compressive force. The plug 414 has a compression surface 4141 and a limiting surface 4142. In this embodiment, the compression surface 4141 is an inclined surface, and the limiting surface 4142 is a straight surface connected to the end of the inclined surface. When the plug 414 is inserted into the through-hole 421, the compression surface 4141 and the inner wall of the through-hole 421 compress and engage, causing the plug 414 to shift towards the body 413. When the end of the plug 414 passes through the through-hole 421, the compressive force disappears, causing the plug 414 to return to its original position. The limiting surface 4142 and the outer peripheral wall of the through-hole 421 engage in a limiting engagement against the insertion direction.

[0069] Example 3

[0070] refer to Figures 16-19 This embodiment differs from Embodiment 1 in that the cushion layer 2 is connected to the base 11 in the elastic module 1. For this purpose, the first connecting component 4 includes a cushion layer connector 41 arranged along the axial direction of the cushion layer 2 and a cushion layer connecting fitting 42 arranged along the outer periphery of the base 11; the cushion layer connector 41 and the cushion layer connecting fitting 42 are hook-fitted.

[0071] Therefore, the padding connector 41 includes a pull rope 415 and a hook 416 at the end of the pull rope 415. The base 11 is a base plate with a protrusion extending outward along its width direction on its long side. A protrusion also extends outward along its length direction on its wide side, and two hanging holes 422 are provided on these protrusions, thus forming a connecting rib 423 between the two hanging holes 422 as the padding connector 42. During connection, the hook 416 is inserted into one of the hanging holes 422, and the hook 416 is hooked onto the connecting rib 423 by the pull force of the pull rope 415.

[0072] Example 4

[0073] refer to Figure 20 The difference between this embodiment and embodiment 3 is that the base 11 is no longer a plate structure as in embodiment 3, but a grid structure connected by ribs. Therefore, the hook 416 can be directly hooked to the ribs on the base 11, that is, the ribs of the base 11 are used as the pad layer connecting parts 42.

[0074] Example 5

[0075] In Examples 1-4, the outer cover 3 is disposed outside the bottom and side surfaces of the elastic module 1. In this example, the outer cover 3 is disposed on the top and side surfaces of the cushion layer 2 and the side surface of the elastic module 1. That is to say, in Example 1, the outer cover 3 is disposed from bottom to top, while in Example 2, the outer cover 3 is disposed from top to bottom.

[0076] refer to Figures 21-26 This embodiment provides an elastic pad, including: an elastic module 1, a soft pad layer 2, and an outer cover 3; the soft pad layer 2 is disposed on the upper surface of the elastic module 1 and is connected to the elastic module 1 through a first connecting component 4; the outer cover 3 covers the top and side surfaces of the soft pad layer 2 and the side surfaces of the elastic module 1, and is fixedly connected to the elastic module 1 through a second connecting component 5.

[0077] The elastic module 1 includes a base 11 and elastic units 12 arrayed on the base 11; the cushion layer 2 is connected to the elastic units 12 via a first connecting component 4, and the outer cover 3 is connected to the base 11 via a second connecting component 5. In this embodiment, the structure of the first connecting component 4 is the same as in embodiment 2, and will not be described again.

[0078] In this embodiment, the outer cover 3 includes a first portion 31 covering the upper surface of the cushion layer 2 and a second portion 32 covering the sides of the cushion layer 2 and the elastic module 1; the second connecting assembly 5 includes an outer cover connector 51 disposed circumferentially along the side of the second portion 32 away from the first portion 31, and an outer cover connecting fitting 52 disposed circumferentially along the base 11; the outer cover connector 51 and the outer cover connecting fitting 52 are hook-fitted. In this embodiment, the first portion 31 and the second portion 32 define a receiving cavity, the cushion layer 2 is disposed in the receiving cavity and sewn and fixed to the side of the first portion 31 facing the receiving cavity. In this way, the cushion layer 2 and the outer cover 3 are also fixed together.

[0079] Specifically, the base 11 has a first hook-on portion extending outward along the horizontal direction on its side as an outer cover connecting fitting 52, and a second hook-on portion is provided on the side of the second part 32 away from the first part 31 as an outer cover connecting fitting 51. The first hook-on portion has a strip-like structure, and the second hook-on portion has a hook-like structure, which enables the hook-on between the first hook-on portion and the second hook-on portion.

[0080] Example 6

[0081] refer to Figure 27 The difference between this embodiment and embodiment 6 is that the outer cover connector 51 is disposed on the inner side of the second part 32 away from the first part 31, and has a first connecting part 511 parallel to the second part 32, and a hooking part 512 forming an acute angle with the first connecting part 511; the hooking part 512 also has a positioning protrusion 513.

[0082] The outer cover connecting fitting 52 includes a second connecting portion 521 parallel to the base 11 and connected to the upper surface of the base 11, and a hook-fitting portion 522 that hooks and fits with the hook portion 512. The hook-fitting portion 522 has a chamber for the hook portion 512 to be inserted into. The inner wall of the chamber has a groove 523 that fits with the positioning protrusion 513, and the opening of the chamber is inclined downward. When the hook portion 512 is hooked with the hook-fitting portion 522, the second portion 32 needs to be pulled downward first so that the hook portion 512 passes over the hook-fitting portion 522, so that the hook portion 512 can extend into the chamber from the opening. Then, under the action of the restoring force, the second portion 32 is restored upward, which can drive the hook portion 512 to move into the chamber until the positioning protrusion 513 and the groove 523 are positioned and fitted.

[0083] Example 7

[0084] refer to Figure 28 The difference between this embodiment and embodiment 6 is that in embodiment 6, the second connecting part 521 is arranged parallel to the base 11. In this embodiment, the base 11 includes a base plate 111 and a support frame 112 that supports the base plate 111. The second connecting part 521 is arranged perpendicular to the base plate 111 and extends into the gap between the base plate 111 and the support frame 112 and is fixed to the side of the support frame 112.

[0085] Example 8

[0086] refer to Figure 29 In this embodiment, the connection method between the outer cover connector 51 and the outer cover connecting fitting 52 is changed from hooking to plugging. Specifically, the outer cover connector 51 is a plug, and the outer cover connecting fitting 52 is embedded in the base 11 and has a socket 524 for inserting the plug. The inner wall of the socket 524 is provided with a wedge-shaped protrusion 525, and the side wall of the plug has a positioning groove 514 that mates with the wedge-shaped protrusion 525.

[0087] Example 9

[0088] refer to Figure 30 and 31The difference between this embodiment and embodiment 7 is that: in embodiment 6, the second connecting portion 521 extends into the gap between the base plate 111 and the support frame 112, that is, the second connecting portion 521 is located on the side of the support frame 112 closer to the elastic unit 12. In this embodiment, the second connecting portion 521 is connected to the side of the support frame 112 away from the elastic unit 12. Furthermore, the hook-fitting portion 522 is changed from the cavity-containing hook-fitting portion 522 in embodiments 6 and 7 to a connecting plate. The first connecting portion 511 and the hook-fitting portion 512 in the outer cover connector 51 are also changed from being set at an acute angle in embodiments 6 and 7 to being set parallel. This creates a cavity between the first connecting portion 511 and the hook-fitting portion 512 for the connecting plate to be inserted, thereby achieving hook-fitting.

[0089] Example 10

[0090] refer to Figure 32 In this embodiment, the base 11 is divided into a base plate 111 and a square tube 113 arranged around the base plate 111. The outer cover connecting fitting 52 is a socket set at the bottom of the square tube 113. The outer cover connecting fitting 51 is a flexible plug with a wedge block 515 on its side wall. When connecting, the second part 32 is pulled first to drive the outer cover connecting fitting 51 over the square tube. Then the flexible plug is bent so that it is inserted from the socket 421 at the bottom of the square tube. The plug-in connection is achieved by the wedge block 515 and the outer peripheral limiting fit of the socket.

[0091] Example 11

[0092] refer to Figure 33 In this embodiment, the base 11 is divided into a base plate 111 and a circular tube 114 arranged circumferentially along the base plate 111. The outer cover connector 51 is the same as in embodiment 6. Compared with embodiment 6, the second connecting part 521 of the outer cover connecting fitting 52 is changed from being connected to the upper surface of the base plate 111 to being connected to the circular tube 114.

[0093] Example 12

[0094] refer to Figure 34 The difference between this embodiment and embodiment 8 is that in embodiment 8, the inner wall of the insertion cavity 24 is provided with a wedge-shaped protrusion 525, and the side wall of the plug has a positioning groove 514 that mates with the wedge-shaped protrusion 525. In this embodiment, the inner wall of the insertion cavity is provided with a positioning groove 526, and the side wall of the plug has a wedge-shaped protrusion 516 that mates with the positioning groove 526.

[0095] Example 14

[0096] refer to Figures 35-38In this embodiment, the elastic pad is an elastic pad used on a folding sofa bed. Since the backrest and seat cushion of the folding sofa bed can change angles, the elastic module 1 on the elastic pad is divided into a backrest elastic module 11 and a seat cushion elastic module 12.

[0097] When the angle between the backrest elastic module 11 and the seat cushion elastic module 12 changes, to prevent the outer cover 3 from hindering the movement of the backrest elastic module 11 and the seat cushion elastic module 12, the second part 32 is provided with an opening 321 at the position corresponding to the backrest elastic module 11 and the seat cushion elastic module 12; when the angle between the backrest elastic module 11 and the seat cushion elastic module 12 decreases, the angle of the opening 321 increases. For example, when a sofa bed changes from a bed state to a sofa state, the angle between the backrest elastic module 11 and the seat cushion elastic module 12 decreases from 180°, while the angle of the opening 321 increases, thus preventing any obstruction to the movement of the backrest elastic module 11 and the seat cushion elastic module 12. Similarly, in order to avoid the software layer from hindering the movement of the backrest elastic module 11 and the seat cushion elastic module 12, the upper surface of the cushion layer 2 is provided with a relief groove 21 at the position between the backrest elastic module 11 and the seat cushion elastic module 12. When the included angle between the backrest elastic module 11 and the seat cushion elastic module 12 becomes smaller, the opening angle of the relief groove 21 decreases.

[0098] Meanwhile, the outer cover 3 also includes a third part 33 connected between the openings 321 on both sides of the second part 32. In this way, the second part 32 and the third part 33 are combined to form two chambers for placing the backrest elastic module 11 or the seat cushion elastic module 12. Therefore, both the second part 32 and the third part 33 need to be provided with outer cover connectors 51 to connect the outer cover connectors 52 on the backrest elastic module 11 or the seat cushion elastic module 12.

[0099] The outer cover connector 51 and the outer cover connecting mating part 52 can adopt the structure described in Examples 5-13, and will not be described again.

[0100] The above is only one specific embodiment of the present utility model, but the design concept of the present utility model is not limited thereto. Any non-substantial modifications made to the present utility model using this concept shall be deemed as an infringement of the protection scope of the present utility model.

Claims

1. An elastic pad, characterized in that... include: The elastic module, the cushioning layer, and the outer cover; the cushioning layer is disposed on the upper surface of the elastic module and is connected to the elastic module via a first connecting component. The outer cover covers the sides and bottom of the elastic module and is connected to the cushion layer along the circumference of the cushion layer via a second connecting component.

2. The elastic pad according to claim 1, characterized in that: The elastic module includes a base and an array of elastic units disposed on the base; the cushion layer is connected to the base or the elastic units via a first connecting component.

3. The elastic pad according to claim 2, characterized in that: The first connecting component includes a padding connector disposed along the circumference of the padding layer, and a padding connector mating component disposed on the side of the outermost ring of elastic units: the padding connector and the padding connector mating component are plugged into each other.

4. The elastic pad according to claim 2, characterized in that: The first connecting component includes a padding connector arranged along the axial direction of the padding layer and a padding connecting fitting arranged along the outer periphery of the base; the padding connector and the padding connecting fitting are hook-and-loop connected.

5. An elastic pad according to any one of claims 1-4, characterized in that: The second connecting component is a zipper.

6. An elastic pad, characterized in that... include: The elastic module, the cushioning layer, and the outer cover; the cushioning layer is disposed on the upper surface of the elastic module and is connected to the elastic module via a first connecting component. The outer cover covers the top and sides of the cushion layer and the sides of the elastic module, and is fixedly connected to the elastic module via a second connecting component.

7. An elastic pad according to claim 6, characterized in that: The elastic module includes a base and an array of elastic units disposed on the base; the cushion layer is connected to the elastic units through a first connecting component, and the outer cover is connected to the base through a second connecting component.

8. An elastic pad according to claim 7, characterized in that: The first connecting component includes a padding connector disposed along the circumference of the padding layer, and a padding connector mating component disposed on the side of the outermost ring of elastic units; the padding connector and the padding connector mating component are plug-in connections.

9. An elastic pad according to claim 7, characterized in that: The outer cover includes a first portion covering the upper surface of the cushion layer and a second portion covering the side of the cushion layer and the side of the elastic module; the second connecting assembly includes an outer cover connector disposed circumferentially on the side of the second portion away from the first portion, and an outer cover connecting fitting disposed circumferentially along the base. The outer cover connector and the outer cover connecting fitting are either plug-in or hook-in.

10. An elastic pad according to claim 9, characterized in that: The first and second portions define a receiving chamber, and the cushioning layer is disposed within the receiving chamber and sewn and fixed to the side of the first portion facing the receiving chamber.

11. An elastic pad according to any one of claims 6-8, characterized in that: The elastic pad is the elastic pad of a folding sofa bed, and the elastic module is divided into a backrest elastic module and a seat cushion elastic module.

12. An elastic pad according to claim 11, characterized in that: The outer cover includes a first portion covering the upper surface of the cushion layer and a second portion covering the sides of the cushion layer and the sides of the elastic module; The second part has an opening at the position between the corresponding backrest elastic module and the seat cushion elastic module; when the included angle between the backrest elastic module and the seat cushion elastic module decreases, the opening angle increases. The outer cover also includes a third part connected between the openings on both sides of the second part.

13. An elastic pad according to claim 12, characterized in that: The second connecting assembly includes an outer cover connector disposed circumferentially on the side of the second and third portions away from the first portion, and an outer cover connecting fitting disposed circumferentially along the base; The outer cover connector and the outer cover connecting fitting are either plug-in or hook-in.

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